Bead-forming tool



D. E. MAXFIELD AND C. B. GREEN.

BEAD FORMING TobL.

APPLICATION FILED OCT. 29;!91'8.

1,332,740. Patented Mar. 2,1920.

UNITED STATES PATENT OFFICE.

DANIEL E. MAXFIELD, OF MOORESTOWN, AND CHARLES E. GREEN, OF FLORENCE, NEW

JERSEY, ASSIGNORS TO WALTER WOOD, OF PHILADELPHIA, PENNSYLVANIA, TRAD- ING AS R. D. WOOD & CO.

IBEAD-FORMING- TOOL.

Specification of Letters Patent.

Patented Mar. 2, 1920.

To all whom 2'2? may concern:

Be it known that we, DANIEL E. MAX- FIELD, citizen of the United States, residing in Moorestown, Burlington county, New Jersey, and CHARLES B. GREEN, citizen of the United States, residing in Florence, Burlington county, New Jersey, have invented certain Improvements in Bead-Forming Tools, of which the following is a specification.

Our invention relates to certain improvements in molds for casting pipe and the main object of our invention is to provide means for forming an annular groove in the mold of a proper depth so that when the pipe is cast the metal will flow into the groove, forming a bead on the end of the cast pipe.

A further object of the invention is to form a slicker that makes the groove in the mold so that the ring can be turned in either direction.

A still further object of the invention is to provide means whereby both slickers are operated when the lever is raised or lowered.

ile our invention is particularly adapted for grooving the mold or forming a bead on the end of a pipe, it can be used for mark ing or numbering the pipe without depart ing from the essential features of the invention.

In the accompanying drawings:

Figure 1 is a vertical sectional view through the upper portion of a pipe mold, showing our improved bead forming tool applied thereto;

Fig. 2 is a plan view of Fig. 1;

Fig. 3 is a section on the line 33, Fig. 1;

Fig. 1 is a sectional perspective view of a portion of one of the levers;

Fig. 5 is a detached perspective view of the slicker;

Fig. 6 is a detached perspective view of the slicker in the form of a number plate; and

Fig. 7 is a side view, partly in section, of the bead end of the pipe.

Referring to Fig. 7, A is the pipe and a is the bead which is formed on one end of the pipe. The other end of the pipe usually has a bell formed thereon into which the bead end of an adjoining pipe extends and the cementitious material is inserted between the bell and the beveled surface of the head so as to make a tight joint between the sections of the pipe. Pi es of this type are usually cast in a vertica position, and, in the present instance, 1 is the flask. 2 is the mold forming the center in the ordinary manner. 3 is a cap plate and 1 is a ring mounted on the cap plate. This ring has an internal screw threaded portion and screwed into this portion is a cylinder 5 conforming to the inner wall of the mold. 6 is an annular bead at the upper end of the mold. Mounted on pivot pins 7 carried by lugs 8 are levers 9 each having an arm 10, one arm extendin to the right and the other to the left. The two arms pass each other, as clearly shown in Fig. 2. On each lever is a socket 111 to receive the arm of the other lever. Each of the levers 9 extend down into the cylinder and carries at its lower end a slicker 12, which is shaped to form the bead groove in the mold 2. Each slicker is removably secured to its lever by bolts 13 in order that a slicker can be renewed or a different form of slicker can be used. The slicker extends through a slot 14: in the cylinder 5.

16 is a set screw for limiting the projection of the slicker into the mold and 17 is a set screw for limiting the outward movement of the lever carrying the slicker and this set screw is mounted on a bearing 18 spanning the lever 9. On the end of the arm 10 of each lever is a handle 15. The slickers, in the present instance, are madeas clearly shown in Fig. 3, the projecting portions being beveled at each side so that the cylinder, with its lever mechanism, can be turned in either direction.

The operation is as follows:

The sand forming the mold is placed in the flask in the usual manner and the bead 6 is properly located and the cap plate 3 is located on the end of the flask. The ring 4, with the cylinder attached, is mounted on the cap plate 3, the cylinder entering the end of the mold, as clearly shown in Fig. 1. The arms 10 of the levers are in the raised position and the slickers are withdrawn as the cylinder is inserted, and when the ring 4 is properly seated then the handles of the levers are grasped and are forced down to the position illustrated in Fig. 1, projecting the slickers into the sand of the mold until the set screws 16 come in contact with the interior of the cylinder. Then the cylinder, with the slickers, is turned in the mold by simply operating the handles 10 in one direction and then in another direction, causing the slickers to cut or .press an annular groove in the mold corresponding to the shape of the slickers. After the groove is formed, then the arms of the lever are raised so as to withdraw the slickers, the levers coming in contact with the set screws 17 and then the ring 4:, the cylinder and the,

levers being bodily withdrawn from the mold. The mold is then ready for the introduction of the core and the pouring of the metal. The metal, as it flows in the mold, is carried past the groove which forms the bead on the end ofthe pipe. When the cast pipe is removed from the mold, the end of the pipe above the bead may be cut ofl in a lathe, or other suitable cutting tool, leaving a solid bead neatly machined at the end,

instead of leaving it, as heretofore, with a' riser, or gate, simply broken ofl. The use of this device insures a solid bead being formed 011 the end of every pipe.

In some instances, instead of the slicker 12, a name, or number, plate may be substituted for one or both of the slickers, see

Fig. 6, and, when such plate is used,.the

ring 4L and its cylinder are not turned. Either one of the levers, or both, is pressed down to make an impression in the mold.

We claim: 1. The combination of a flask having a mold therein; a top plate; a ring adapted to turn on the top plate; a cylinder carried by the ring and extending into the mold and ring and extending into the mold; two levers pivoted tothe ring a slicker carried by each lever; each lever having anlarm' extending over the top plate so that when the arms are depressed thesli'ckers will be projected into the walls of-the mold and on turning the ring bythe arms the slickers will form an annular groove in the' mold and when the arms are raised the slickers will be retracted from the mold, allowing thecylinder to be withdrawn. 1 v ,3. The combination of a flask having a mold therein; a top plate; a ring mounted on the topplate; a cylinder carried by the ring and projecting into the mold; two le'- vers pivoted to the ring; a slicker-carried by one end of each lever; sockets on each lever adapted to receive the arm ofthe other lever; hand holds on theendsof the arms so that the levers can beoperated to project or retract the slickers and to turn thering 4. The combination of a flask having a top plate; a ring mounted on the top plate; a cylinder secured to the ring and project'- ing into the mold; two levers pivoted; on opposite sides of the ring and extending into the cylinder, said cylinder having openings; a slicker mounted in'each opening and secured tothe levers setscrews for limiting the movementof the levers in both directions'; arms on the levers extending at right angles to'the body portion of the levers so that when the arms are lowered the slickers are projected into the mold and on turning the ring by the arms an annular groove will be formed in the mold and on raising'the arms the slickers will be retracted and the cylinder can be removed from the mold,

In witness whereof we aflix our. signatures. r s r DANIEL E. MAXFIELDi CHARLES E. GREEN.- 

